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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-12-10 11:09:37 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-14 11:09:30 -0500 |
| commit | 9d4747d02376aeb8de38afa25430de79129c5799 (patch) | |
| tree | 4a04bba141094a0e429e3c84e7384758d7dbc43a /arch/x86 | |
| parent | 69372cf01290b9587d2cee8fbe161d75d55c3adc (diff) | |
| download | linux-9d4747d02376aeb8de38afa25430de79129c5799.tar.bz2 | |
KVM: SVM: Remove the call to sev_platform_status() during setup
When both KVM support and the CCP driver are built into the kernel instead
of as modules, KVM initialization can happen before CCP initialization. As
a result, sev_platform_status() will return a failure when it is called
from sev_hardware_setup(), when this isn't really an error condition.
Since sev_platform_status() doesn't need to be called at this time anyway,
remove the invocation from sev_hardware_setup().
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <618380488358b56af558f2682203786f09a49483.1607620209.git.thomas.lendacky@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/svm/sev.c | 22 |
1 files changed, 1 insertions, 21 deletions
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 3418bb18dae7..7166aec97ffb 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -1127,9 +1127,6 @@ void sev_vm_destroy(struct kvm *kvm) int __init sev_hardware_setup(void) { - struct sev_user_data_status *status; - int rc; - /* Maximum number of encrypted guests supported simultaneously */ max_sev_asid = cpuid_ecx(0x8000001F); @@ -1148,26 +1145,9 @@ int __init sev_hardware_setup(void) if (!sev_reclaim_asid_bitmap) return 1; - status = kmalloc(sizeof(*status), GFP_KERNEL); - if (!status) - return 1; - - /* - * Check SEV platform status. - * - * PLATFORM_STATUS can be called in any state, if we failed to query - * the PLATFORM status then either PSP firmware does not support SEV - * feature or SEV firmware is dead. - */ - rc = sev_platform_status(status, NULL); - if (rc) - goto err; - pr_info("SEV supported\n"); -err: - kfree(status); - return rc; + return 0; } void sev_hardware_teardown(void) |